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    <script>
        // filter过滤
        let arr =[11,8.4,12,5];
        let result = arr .filter((value ,index , array )=> {
            // console.log (value ,index , array);
            if(value > 10 ){
                // 该元素符合条件
                return true;

            }

        });
        console.log(result);
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